Frustum of a regular pyramid is the area that lies between two parallel bases of a regular pyramid. The volume of frustum of a regular pyramid formula is derived as V = (h/3) x (a+b+√(axb)), where V = Volume, h = Altitude, a = Lower Base Area and b = Upper Base Area. To calculate the volume, first you have to multiply the upper and lower base area, then take square root for it. Now add the obtained values with upper and lower base area. Finally, multiply this value with (h/3).

V = (h/3)×(a+b+√(a×b))

Where,

V = Volume

H = Altitude

A = Lower Base Area

B = Upper Base Area

The volume of frustum of a regular pyramid formula helps you to calculate its volume based on the altitude, lower and upper base area. A regular pyramid can have one or more frustums or frusta lying between lower and upper bases. Height of a frustum is the perpendicular distance between the planes of the two bases.